Sib S. Ray
4Patents
3h-index
8Co-inventors
39Inventor score
Filing activity: Jul 18, 1990 → Dec 23, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5299661A | Mechanical overspeed safety device | Performing Operations; Transporting | 24 | Expired |
| US5101930A | Hydraulic elevator muffler | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US6095289A | Apparatus and method of thermally detecting elevator machine brake | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5076146A | Method and apparatus for protecting a cylinder of an hydraulic elevator | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.